An opal and diamond brooch-pendant, featuring one bezel set 30 x 13 mm free form black opal with blue and green flashes of reported weight 17.44 carats, accented by forty-one mixed marquise and round brilliant cut diamonds of reported total weight 1.95 carats. Platinum. Total weight 27.20 grams. Overall size of pendant 48.30 x 25.80 mm. Gemmologist's report.